Will You Switch to the New Hotmail Outlook?

Outlook's new web client launched yesterday, and it's pretty goddamn awesome. But many of us have invested years into Gmail and its many intricacies (or maybe Yahoo! or maybe Exchange!), which makes switching over all the more difficult. If you're a browser-based email fiend, will you switch over? If not, what will it take to make you ditch your current mail service?